[TechAssist] Re: Toshiba Model cx2950c chassis 8820 Dead
- From: <tvservice@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 21 Aug 2003 12:38:25 -0500
I'm looking at sams 2670 folder 2 on TAC8820 chassis, it shows C840 negative
lead to ground pin 8 of T840 is ground.
positive lead goes thru R842 18ohm 1watt to pin 1 of Q840.
Robert
tvservice@xxxxxxxxxxxxx
H & H Electronics Inc
Dallas, TX
----- Original Message -----
From: "Andrew Rose" <badandy2@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, August 21, 2003 12:02 AM
Subject: [TechAssist] Re: Toshiba Model cx2950c chassis 8820 Dead
> + side goes to pin 8 of Xformer
> Andrew Rose
> Action TV
> ----- Original Message -----
> From: <tvservice@xxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Thursday, August 21, 2003 6:52 AM
> Subject: [TechAssist] Re: Toshiba Model cx2950c chassis 8820 Dead
>
>
> > Check the polarity installation of the cap C841
> > you may have installed backward
> > Robert
> > tvservice@xxxxxxxxxxxxx
> > H & H Electronics Inc
> > Dallas, TX
> > ----- Original Message -----
> > From: "Alvin Rose" <ajroseca@xxxxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Thursday, August 21, 2003 2:18 PM
> > Subject: [TechAssist] Re: Toshiba Model cx2950c chassis 8820 Dead
> >
> >
> > > Hi Al
> > > checked the installation of the Str regulator and it has the sk4512
> > > code on it..I installed it same as unit removed..Is there a difference
> > > pinout with this code..Set now comes on but C841 is overheating
> > > and is in on the sides.
> > > Alvin
> > > Al Gutz wrote:
> > >
> > > >Alvin
> > > >
> > > > Watch the STR for code SK4512, check resistance before installing.
> > > >
> > > >AL G
> > > >Al's TV-Electronics
> > > >Pembroke Ont.
> > > >Canada
> > > >
> > > >teltek3 wrote:
> > > >
> > > >
> > > >>Here's the "Poop"
> > > >>Change...
> > > >>R820....68 ohm 1/2 watt
> > > >>C841....22ufd/50V
> > > >>C822....920 ohm 1/2 watt
> > > >>Q802....STR-D1005T (Be careful with this Replacement, some Generics
> have
> > the
> > > >>pins pre-formed in the opposite direction, so when pulling out
> original
> > make
> > > >>note of the way this Regulator was positioned...writing facing in
the
> > same
> > > >>direction as the one removed.)
> > > >>
> > > >>Only other thing may be that you have the polarity of C841
> > reversed...check
> > > >>that.
> > > >>
> > > >>-Ed-
> > > >>Tel-Tek Electronics
> > > >>Ontario-Canada
> > > >>teltek3@xxxxxxxxxxxx
> > > >>----- Original Message -----
> > > >>From: "Alvin Rose" <ajroseca@xxxxxxxxxxxxxxx>
> > > >>To: <techassist@xxxxxxxxxxxxx>
> > > >>Sent: Wednesday, August 20, 2003 7:42 PM
> > > >>Subject: [TechAssist] Re: Toshiba Model cx2950c chassis 8820 Dead
> > > >>
> > > >>
> > > >>
> > > >>>Hi Ed
> > > >>>c822 was changed with a 100 Mfd 50 volt electrolytic and r820
checks
> ok
> > > >>>at 68 ohms ...Is there anything else that can cause this problem..I
> > have
> > > >>>
> > > >>>
> > > >>no
> > > >>
> > > >>
> > > >>>schematic for this one...Will replace c841 with a higher voltage
unit
> > > >>>A.R
> > > >>>
> > > >>>
> > > >>>>-Ed-
> > > >>>>Tel-Tek Electronics
> > > >>>>Ontario-Canada
> > > >>>>teltek3@xxxxxxxxxxxx
> > > >>>>----- Originaere anything l Message -----
> > > >>>>From: "Alvin Rose" <ajroseca@xxxxxxxxxxxxxxx>
> > > >>>>To: <techassist@xxxxxxxxxxxxx>
> > > >>>>Sent: Wednesday, August 20, 2003 6:13 PM
> > > >>>>Subject: [TechAssist] Toshiba Model cx2950c chassis 8820 Dead
> > > >>>>
> > > >>>>
> > > >>>>
> > > >>>>
> > > >>>>
> > > >>>>
> > > >>>>>Hi Guys
> > > >>>>>
> > > >>>>>We have a toshiba CX2958c chassis 8820 which was dead
> > > >>>>>replaced c863 and c866 also c841... Replaced voltage
> > > >>>>>regulators Q801 and Q802 set came on but after a few
> > > >>>>>seconds blew the case off C841 again..Any help on this
> > > >>>>>unit would be appreciated ... also value of C841
> > > >>>>>Alvin Rose
> > > >>>>>Radio & Tv Centre
> > > >>>>>
> > > >>>>>
> > > >>>>>
> > > >>>>>
> > > >>>>>
> > > >>>>>
> > > >>>>>
> > > >>>>>
> > > >>>>>
> > > >>>>>
> > > >>>>>
> > >
> >
>
>>>*************************************************************************
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